Strangest bird....but cute nonetheless!

We got her as a baby, and my mom was the only one who could take her out of the carrier. A day after, I could take her out of the cage and that was it. She was terrified of my mom, and especially my stepdad. Every time they would walk past her cage she would scream and flap her wings, breaking a lot of her feathers (in the end she had no tail..but it kind of looked cute). She developed a phobia of anyone else except for me. The only exception was my younger sister, whom my bird would ATTACK! It was the strangest thing ever. She saw me as her mate, and would do a little dance sometimes. Very quiet bird. Adorable and learned a few tricks. She would fall asleep upside down under my chin/chest while i was laying down, her fists clenched, as I watched tv. Could sit in a windowsill all day long. Sadly, we moved out of country and had to give her away, so we gave her to a rehabilitation center for birds and she is doing marvelous and supposedly has no phobia of people!